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For me, data is not any better but at least is stable now. For the past couple of days, I’ve been getting very inconsistent or nonexistent data connection; Sppeedtest.net was showing from 2.9Mbps to .02Mbps in the same test. This morning, I’m getting more steady data .60 -.80Mbps. I really hope this is a sign that AT&T is working on its network.
 
It was working awesome this morning then went slow again. I think it's AT&T. Seems everytime a new iPhone comes out their network suffers a bit n
 
Started happening to me after leaving the airport yesterday driving around South Philadelphia. Service was fine all day in Cleveland, though.

One of Apple's reps did tell me (and I posted this) that AT&T was going to be rolling outtages soon. Maybe this is what he was talking about. Perhaps there's a mass tower upgrade going on.

This is exactly what they told me last week when I started having major issues. I was getting no connection yet had full service signal.

When I phoned AT&T (and I posted this some time ago- even emailed arn about it) this is basically what transpired.

I told the rep I was getting no 3G service on my phone, spotty at best yet my signals were strong and my bars were full. I kindly asked him to see if a tower was down in my area, or if they were having problems in MI. He looked into the issue for me and his words Verbatim were : "Wow, oh, never seen this before" I asked of course what: he went to describe that the systems were indicating the the entire nation (Including Hawaii and Alaska) were experiencing issues.

He further went on to explain from the notes, that AT&T was doing some massive update due to the iP4 release, and they appear to have been behind with the update in correspondence to the release. He said to give it a day or so and report back.

I am continuing to have service (data) outages in my area, but it is working more now than it has been the last week or so. I cannot test my 3GS because I handed that down to my son who is on T-mobile; so I cannot speculate as to the service with the other iPhone's on the network.

Furthermore, I have no idea if this is phone related, service related, sim related, or a combination of all. I can say that I have not had the antenna issues others are experiencing. If I were to guess, it's the sim along with the transmission issues with the AT&T network.

Be that as it may, whatever the cause- it's pretty surprising (or not) that the only US carrier once again can't get it's act together on/before/after such a major product launch. Gotta believe this must have been a priority, yet here we are again, fixing it after the fact.
 
Yep, nevermind... It's not working now... It's slow again...

Location: King of Prussia, PA
 
Yep, broken again, it was working last night. Its odd that it would seem like a network problem, but then the same time my iPhone 4 is not working, my girlfriends 3gs works flawlessly
 
Mine has been doing this on and off for almost a week now, and it has gotten really bad in the last couple of days. I was willing to live with the deathgrip issue and the proximity sensor issue because the phone otherwise is fantastic. But unreliable data is a deal-breaker. If it doesn't get better in the next day or so, I'm going to have to take the phone back. I'll re-buy it when it's fully sorted out.


-vik
 
This is total crap, I can't load anything this morning. My email for example will give me the push arrival tone, but when I try to open it, nothing, the status indicator just spins in a circle.
 
My 100% sign that there is something wrong is that Pandora craps out. I am at my desk and my 3GS would play Pandora all day. Now I am lucky to get 10 seconds straight and then it just hangs. Same exact spot on my desk....in a Bose sound dock.

I am convinced the antenna issues are not the root cause, but only an easy graphical reference for the average user to point to....the antenna issues are just a symptom of a firmware flaw that should get fixed with an update.
 
3G is working fine in Mississippi Gulf coast

I'm currently visiting down in Gulfport, MS and 3G is working fine with my new iPhone 4. I just did a network speed test on my iPhone and it reported 2.18 MB/s download and 1.27 Mb/s upload - quite decent. Web pages are loading nicely.

The issues the rest of you are reporting seem to be regional. It doesn't appear to be an issue with the iPhone 4 itself but rather with the network, probably where many people possess the iPhone 4. It seems AT&T was not prepared for the advent of the iPhone 4.
 
This is total crap, I can't load anything this morning. My email for example will give me the push arrival tone, but when I try to open it, nothing, the status indicator just spins in a circle.

I'm getting this too. My data on this now sucks.
 
Had similar problems in Seattle area (slow data loading; dropped calls with full coverage, etc.). I took it into Apple Store and got a replacement (even though their diagnostics showed only 1 dropped call; I had at least 5 that day alone). Doesn't seem to have this problem now (also added a bumper to new phone).
 
I was actually having this problem on my 3gs all morning. Speedtest was giving me like 30 kbits/s.

But then I took out the sim, blew some compressed air in there to clean out the compartment, and put the sim back in, and I'm back up to normal 3g speeds.

So, I may be having a different problem from you all with the iphone 4's, but you could try popping the sim out and back in.
 
I was actually having this problem on my 3gs all morning. Speedtest was giving me like 30 kbits/s.

But then I took out the sim, blew some compressed air in there to clean out the compartment, and put the sim back in, and I'm back up to normal 3g speeds.

So, I may be having a different problem from you all with the iphone 4's, but you could try popping the sim out and back in.

Done that ...the first speed test was good and then it went down.
 
I'm currently visiting down in Gulfport, MS and 3G is working fine with my new iPhone 4. I just did a network speed test on my iPhone and it reported 2.18 MB/s download and 1.27 Mb/s upload - quite decent. Web pages are loading nicely.

The issues the rest of you are reporting seem to be regional. It doesn't appear to be an issue with the iPhone 4 itself but rather with the network, probably where many people possess the iPhone 4. It seems AT&T was not prepared for the advent of the iPhone 4.

Right, because this is the first ever iPhone launch for At&t.
 
Done that ...the first speed test was good and then it went down.

Yeah...it's slower on a subsequent speedtest for me too. Also, looking the history of my speed tests it's waaaay slower. Couple months ago I have 3g tests where I'm downloading at 2500 kbits...I'm getting like 600 now... at least it's more than the 30 I was getting before I popped the sim out and in.
 
Next time I get a new iPhone, i will definitly be waiting a good month or two before I buy it ...
 
I am having this issue now...I have 5 bars, 3G, and cannot get data. Keeps saying "could not activate cellular data network". I've restarted, turned airplane mode on/off, 3G on/off, cellular data on/off, restored as new, nothing helps. Removed/replaced SIM, nothing. I can't even freaking call AT&T FROM my phone because it'll either drop the call, or my face will cause menu options to be pushed.

I've had it. I ordered from Apple online. How do I return it? Do I have to go to an Apple store, or can I do it over the phone?
 
Here is something odd.. I have been having decent 3g connection today while sitting at my desk. I just walked around my office and BAM still full bars but email and web pages just hanggin. So IDK seems to be when i am moving around.
 
Today has been better for me, but not great. This morning the speed seemed back to normal, then it was slow again, then no data connection at all. Been up and down since then, thought it was fixed but apparently not. I'm in Minnesota
 
Here is something odd.. I have been having decent 3g connection today while sitting at my desk. I just walked around my office and BAM still full bars but email and web pages just hanggin. So IDK seems to be when i am moving around.

I see this too. Regardless of the "deathgrip" issues, my phone will show 4-5 bars much more consistently than my 3G did, however I experience a lot more dropped calls, hang-ups, slow 3G, email issues.
 
Today has been better for me, but not great. This morning the speed seemed back to normal, then it was slow again, then no data connection at all. Been up and down since then, thought it was fixed but apparently not. I'm in Minnesota

Same issues here (Southeast Michigan). 3G was working well this morning, this afternoon it barely works at all (and sometimes not at all). I've been having this issue for days now. First noticed it on Friday 6/25.
 
Turn off 3G in settings, loads faster

Hey guys, I'm having the same horrible issue which affects facebook, app store, email etc. I went into settings and turned off 3G and it fixed my problem. Its faster and more reliable so far. Of course I would like 3G to work so I'll call apple later on this but for now it world for me
 
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